By the BS Auto Supplies Editorial Team | Reviewed by the automotive parts content team | Last updated: October 30, 2026 Quick Answers: Nissan Sentra CVT Noises What causes a Nissan Sentra CVT transmission to make unusual noises? Most noises trace back to low, burnt or incorrect CVT fluid, a clogged filter, or wear on the internal belt, pulleys, pump or bearings. A whine or hum that rises with...